POSITIONING DEVICE FOR USE WITH A PATIENT UNDER ANESTHESIA AND ASSOCIATED METHODS

摘要

A head rest comprising: a first support (110) comprising an insertion portion (200, 1222) dimensioned to permit insertion into a first recess (1435) in a base (10), an extension portion extending from the insertion portion (200, 1222), and a connector disposed on the insertion portion (200, 1222); a first key structure (355, 1137) disposed on the connector; a second support (110) positioned on the second side of the base and comprising an insertion portion (200, 1222) dimensioned for insertion into a second recess (1435) in a base (10), an extension portion extending from the insertion portion, and a connector disposed on the insertion portion; a second key structure (355, 1137) disposed on the connector; first and second mandible arms (120) removably connected to the connectors of the respective supports (110) and comprising a respective complementary key structure (355, 1137) wherein the complementary key structure (355, 1137) is complementary to the respective key structure (355, 1137) so that the first mandible arm (120) cannot be connected to the connector on the second support (110); and that the second mandible arm cannot be connected to the connector on the first support (110).